Fetch Event Relations

[skylord123]

Ref: https://spec.matrix.org/v1.11/client-server-api/#get_matrixclientv1roomsroomidrelationseventidreltypeeventtype
Rendered example:

Paginate through the related events to a given eventId. Related events being reactions, thread messages, message modifications, message removals, etc. This outputs once per iterated page but you can also easily make a flow to aggregate several pages and send a single payload (there is actually an example of this in the examples folder).